Materials Literature
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Aluminium nanocrystals with different morphology were prepared in inert gas by confined arc plasma,and the influence of technologic parameters on morphology of the product were studied.The aluminium nanocrystalline powders were characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM) and the corre…
The surface of acid-activated palygorskite(denoted as Pa) was modified by grafting 3-aminopropyl-triethoxysilane(the silylated Pa,denoted as PaAPTES) for immobileizetion of molybdovanadophosphoric heteropoly acids(H5PMo10V2O40,denoted as PMoV).The samples were characterized by Fourier transform infrared spectroscopy(F…
It was investigated for states of metal aluminum and copper films deposited in different time,their resistance properties and thickness.The films' thickness was measured on normal methods of optical interference and intensity-transmittance.By optical microscopic structure inspected and resistance measured,the result s…
Some debris,phenomenon of flash,plasma and etc.will emerge in the process of highvelocity/ hypervelocity impact.High temperature of material shocked by hypervelocity projectile will cause impact flash phenomenon.The change law of electromagnetic intensity is given.Combined with numerical simulation and theoretic analy…
For exploitation new non-toxic antifouling paints,marine benthic diatoms were incubated and used for the settlement tests in laboratory.Four coatings were prepared in which it contained respectively with 2%,3%,5% and 10% of tourmaline powders.The settlement behavior of marine benthic diatoms on these coatings was inve…
Carboxyl-terminated polyamide(CTPA) was modified by the epoxy acrylic acid mono ester(EAAME) and 2-acrylamido-2-methyl-propanesulfonic acid(AMPS) monomers grafted copolymer.Polyamide resin emulsion was obtained by means of salt-formation from neutralization.The structure of the intermediates and the target product wer…
HfLaO films doped with different La contents,varying from 17% to 37%,were deposited using RF magnetron sputtering.The structure,thermal stability,surface morphology,and optical properties of HfLaO films were investigated by X-ray diffraction(XRD),atomic force microscope(AFM) and spectrophotometry.The results indicate…
Powder coating thickness is an important indicator in electrostatic painting process,which is related to quality and cost.We use the Shainin DOE in this article: analyzing the key impact factors on powder coating thickness by Paired Comparisons and Tukey Test,searching the best parameter combination by Variable Search…
The new standards of FZ/T 81014-2008 for infant clothing quality requirements are described,contents of examination in the new standards such as infant appearance quality clothing,intrinsic quality and safety requirements are analyzed.According to current market situation and technical regulations improved in the new…
The starch maleat ester was prepared from tapioca starch by esterification with maleic anhydride with microwave irradiation.It mainly discussed the influence of several important parameters to the product.These parameters were the molar ratio of tapioca starch to maleic anhydride,the amount of Na2CO3,the amount of wat…
A series of single-phase nickel sulfides,such as cubic NiS2,hexagonal α-NiS and rhombohedral β-NiS,were synthesized in ethylene glycol through an acrylamide-assisted solvothermal process by using thiourea and nickel nitrate as the starting materials.The product was characterized by XRD and TEM.The results show that th…
This paper reports on methods and examples of in-situ field emission measurements of individual one-dimensional nanostructures based on scanning electron microscope(SEM) and nanoprobe techniques.In the experimental setup,tungsten(W) tips and nanostructures acted as electron-receivers and emitters,respectively,based on…
In this research two kinds of knitting fabrics made from 29tex cotton yarn and 33tex PP yarn were developed and knitted using milano rib stitch and half-milano rib stitch and by using the plating stitch production technology.After the knitted samples were treated using hot pressing method,the new composite materials w…
Alloy DZ468 samples with different Cr content after heat treatment were aged for a long period of time in a muffle furnace.Microstructure of the alloy was observed by scanning electron microscopy(SEM) and its phase structure was investigated by transmission electron microscopy(TEM).The results show that the number of…
The influence of MgCO3 on the microstructure of AZ31 magnesium alloy has been investigated.The results show that the morphology of β-Mg17Al12 Phase in the alloy changed from continuous network to diseontinuous one,and their amount deereased with inereasing MgCO3 content.AZ31 magnesium alloy has the best refining effec…
The excellent polycarboxylate superplasticizer including carboxyl,sulfonic,functional group with multiple co-polymerizations ester was synthesized and the molecular structure was characterized by fourier transform infrared spectroscopy.The best synthesis technics was that the reaction temperature was 90 ℃,the reaction…
On the basis of analyzing the principle of two-way memory effect of the shape memory alloy,two miniature optothermal motors are designed and manufactured using sheets of Cu-Zn-Al two-way shape memory alloy.Experiments are carried out to test their driving performance.The experiment results demonstrate that when using…
Aimed at investigating the effect of carrier injection on the voltage in a nematic liquid crystal cell,this paper introduces a surface-charge modulation model involving charge carriers injection of a photorefractive liquid crystal system.The charge carriers,subjected to DC voltage application,gather on the interfaces,…
By applying graph theory,finite group acting on sets,orbit and equivalent relation and so on,we studied the computation of the non-isomorphic digraphs in the n-partite digraphs of the same category.The results generalized the conclusion of the references[1-2],and a new computation formula was given.
According to the data provided by Optical Sensor System for the ESDD Monitoring of Transmission Equipment,an intellectual prediction model based on least squares support vector machines(LS-SVM) is built,whose input variables are temperature (T),humidity(H),wind velocity(WV),air pressure(P) and rainfall(R),and output v…